/Engine/Source/Runtime/Foliage/Public/ProceduralFoliageBroadphase.h
void GetInstancesInBox ( const FBox2D & Box, [TArray](API\Runtime\Core\Containers\TArray)< [FProceduralFoliageInstance](API\Runtime\Foliage\FProceduralFoliageInstance) * > & Instances ) const